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Commit 0edef7e4 authored by Xiang Chen's avatar Xiang Chen Committed by Martin K. Petersen
Browse files

scsi: hisi_sas: modify hard reset for directed-attached disk 



Correctly set registers in v2 for root PHY hardreset for directly
attached disk.

Signed-off-by: default avatarXiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: default avatarJohn Garry <john.garry@huawei.com>
Reviewed-by: default avatarJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 87e287c1

drivers/scsi/hisi_sas/hisi_sas_v2_hw.c

+10 −0
Original line number Diff line number Diff line
@@ -207,6 +207,8 @@ 
#define TXID_AUTO			(PORT_BASE + 0xb8)

#define TXID_AUTO_CT3_OFF		1

#define TXID_AUTO_CT3_MSK		(0x1 << TXID_AUTO_CT3_OFF)

#define TX_HARDRST_OFF          2

#define TX_HARDRST_MSK          (0x1 << TX_HARDRST_OFF)

#define RX_IDAF_DWORD0			(PORT_BASE + 0xc4)

#define RX_IDAF_DWORD1			(PORT_BASE + 0xc8)

#define RX_IDAF_DWORD2			(PORT_BASE + 0xcc)
@@ -1078,7 +1080,15 @@ static void stop_phy_v2_hw(struct hisi_hba *hisi_hba, int phy_no) 


static void phy_hard_reset_v2_hw(struct hisi_hba *hisi_hba, int phy_no)

{

	struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];

	u32 txid_auto;



	stop_phy_v2_hw(hisi_hba, phy_no);

	if (phy->identify.device_type == SAS_END_DEVICE) {

		txid_auto = hisi_sas_phy_read32(hisi_hba, phy_no, TXID_AUTO);

		hisi_sas_phy_write32(hisi_hba, phy_no, TXID_AUTO,

					txid_auto | TX_HARDRST_MSK);

	}

	msleep(100);

	start_phy_v2_hw(hisi_hba, phy_no);

}